L'odeur s'explique par le fait que les asiatiques ont moins de glandes sudoripares (apocrine sweat glands en anglais) qui produisent la sueur.
http://en.wikipedia.org/wiki/Apocrine_sweat_gland
East Asians have fewer such glands than Europeans and people of Sub-Saharan African descent, which decreases their susceptibility to body odor. Individuals of African ancestry have the largest and most active apocrine glands. Racial differences also exist in the cerumen glands: apocrine sweat glands which produce earwax. East Asians have predominantly dry earwax, as opposed to sticky; the gene encoding for this is strongly linked to reduced body odor, whereas those with wet, sticky earwax (Europeans and Africans) are prone to more body odor.
http://en.wikipedia.org/wiki/Apocrine_sweat_gland
East Asians have fewer such glands than Europeans and people of Sub-Saharan African descent, which decreases their susceptibility to body odor. Individuals of African ancestry have the largest and most active apocrine glands. Racial differences also exist in the cerumen glands: apocrine sweat glands which produce earwax. East Asians have predominantly dry earwax, as opposed to sticky; the gene encoding for this is strongly linked to reduced body odor, whereas those with wet, sticky earwax (Europeans and Africans) are prone to more body odor.